Applied Catalysis B Environment and Energy, Год журнала: 2021, Номер 304, С. 120935 - 120935
Опубликована: Ноя. 21, 2021
Язык: Английский
Chemical Society Reviews, Год журнала: 2022, Номер 51(11), С. 4583 - 4762
Опубликована: Янв. 1, 2022
Replacing fossil fuels with energy sources and carriers that are sustainable, environmentally benign, affordable is amongst the most pressing challenges for future socio-economic development.
Язык: Английский
Процитировано
1077
Advanced Science, Год журнала: 2022, Номер 9(18)
Опубликована: Апрель 18, 2022
Abstract The excessive dependence on fossil fuels contributes to the majority of CO 2 emissions, influencing climate change. One promising alternative is green hydrogen, which can be produced through water electrolysis from renewable electricity. However, variety and complexity hydrogen evolution electrocatalysts currently studied increases difficulty in integration catalytic theory, catalyst design preparation, characterization methods. Herein, this review first highlights principles for reaction (HER) electrocatalysts, presenting thermodynamics, kinetics, related electronic structural descriptors HER. Second, reasonable design, mechanistic understanding, performance enhancement are deeply discussed based intrinsic extrinsic effects. Third, recent advancements electrocatalytic splitting technology further briefly. Finally, challenges perspectives development highly efficient proposed.
Язык: Английский
Процитировано
304
Advanced Materials, Год журнала: 2021, Номер 33(9)
Опубликована: Янв. 29, 2021
Abstract The slow kinetics of oxygen evolution reaction (OER) causes high power consumption for electrochemical water splitting. Various strategies have been attempted to accelerate the OER rate, but there are few studies on regulating transport reactants especially under large current densities when mass transfer factor dominates reactions. Herein, Ni x Fe 1– alloy nanocones arrays (with ≈2 nm surface NiO/NiFe(OH) 2 layer) adopted boost reactants. Finite element analysis suggests that high‐curvature tips can enhance local electric field, which induces an order magnitude higher concentration hydroxide ions (OH − ) at active sites and promotes intrinsic activity by 67% 1.5 V. Experimental results show a fabricated NiFe nanocone array electrode, with optimized composition, has small overpotential 190 mV 10 mA cm −2 255 500 . When calibrated area, electrode outperforms state‐of‐the‐art electrocatalysts. positive effect tip‐enhanced field in promoting is also confirmed comparing samples different tip curvature radii. It suggested this enhanced generic other catalysts.
Язык: Английский
Процитировано
301
Small, Год журнала: 2022, Номер 18(27)
Опубликована: Июнь 6, 2022
Abstract Hydrogen, a new energy carrier that can replace traditional fossil fuels, is seen as one of the most promising clean sources. The use renewable electricity to drive hydrogen production has very broad prospects for addressing and environmental problems. Therefore, many researchers favor electrolytic water due its green low‐cost advantages. reaction comprises oxygen evolution (OER) (HER). Understanding OER HER mechanisms in acidic alkaline processes contributes further studying design surface regulation catalysts. catalysts are mainly reviewed defects, doping, alloying, reconstruction, crystal structure, heterostructures. Besides, recent overall splitting also reviewed. Finally, this review paves way rational synthesis materials highly efficient electrocatalysis.
Язык: Английский
Процитировано
282
Advanced Functional Materials, Год журнала: 2021, Номер 32(6)
Опубликована: Окт. 27, 2021
Abstract Electrochemical water splitting powered by renewable energy sources has been considered as an attractive hydrogen generation technology with high‐purity product and zero carbon emission. However, the efficient realization of large‐scale is severely hampered sluggish hydrogen/oxygen evolution reaction (HER/OER). As important class functional materials, complex hollow electrocatalysts provide promising solutions to accelerate HER/OER kinetics owing their advantageous features, such abundant exposed active sites, increased contact area between catalysts electrolyte, shortened mass/charge transport length. Herein, recent advances in development outstanding performances are summarized. Beginning introduction mechanisms design principles, achievements engineering highlighted focus on structural modulation, composition control, electrocatalytic evaluation. Finally, some present challenges future perspectives for advanced toward further discussed.
Язык: Английский
Процитировано
221
Advanced Materials, Год журнала: 2022, Номер 34(13)
Опубликована: Янв. 26, 2022
Developing robust and highly active non-precious electrocatalysts for the hydrogen/oxygen evolution reaction (HER/OER) is crucial industrialization of hydrogen energy. In this study, a durable single-atom W-doped NiS0.5 Se0.5 nanosheet @ nanorod heterostructure (W-NiS0.5 ) electrocatalyst prepared. W-NiS0.5 exhibits excellent catalytic activity HER OER with ultralow overpotentials (39 106 mV 171 239 at 10 100 mA cm-2 , respectively) long-term durability (500 h), outperforming commercial precious-metal catalysts many other previously reported transition-metal-based compounds (TMCs). The introduction W delocalizes spin state Ni, which results in an increase Ni d-electron density. This causes optimization adsorption/desorption process H significant reduction adsorption free energy rate-determining step (O* → OOH*), thus accelerating thermodynamics kinetics OER. work provides rational feasible strategy to design water splitting develop advanced TMC by regulating delocalized states.
Язык: Английский
Процитировано
206
InfoMat, Год журнала: 2022, Номер 4(9)
Опубликована: Авг. 23, 2022
Abstract Developing new methodologies to produce clean and renewable energy resources is pivotal for carbon‐neutral initiatives. Hydrogen (H 2 ) considered as an ideal resource due its nontoxic, pollution‐free, high utilization rate, calorific combustion value. Electrolysis of water driven by the electricity generated from sources (e.g., solar energy, wind energy) hydrogen attracts great efforts production with purity. Recently, breakthrough catalyst activity limit evolution reaction (HER) catalysts has received extensive attention. Comparatively, fewer reviews have focused on long‐term stability HER catalysts, which indeed decisive large‐scale electrolytic industrialization. Therefore, a systematic summary concentrated durability electrocatalysts would provide fundamental understanding electrocatalytic performance practical applications offer opportunities rational design highly performed electrocatalysts. This review summarizes research progress toward precious metals, transition metal‐free in past few years. It discusses challenges future perspectives. We anticipate that it valuable basis designing robust image
Язык: Английский
Процитировано
198
Small, Год журнала: 2021, Номер 18(7)
Опубликована: Ноя. 5, 2021
Abstract High‐entropy alloys (HEAs) are expected to function well as electrocatalytic materials, owing their widely adjustable composition and unique physical chemical properties. Recently, HEA catalysts extensively studied in the field of electrocatalysis; this motivated authors investigate relationship between structure HEAs performance. In review, latest advances electrocatalysts systematically summarized, with special focus on nitrogen fixation, carbon cycle, water splitting, fuel cells; addition, by combining characterization analysis microstructures, rational design strategies for optimizing electrocatalysts, including controllable preparation, component regulation, strain engineering, defect theoretical prediction proposed. Moreover, existing issues future trends predicted, which will help further develop these high‐entropy materials.
Язык: Английский
Процитировано
195
Advanced Materials, Год журнала: 2022, Номер 34(12)
Опубликована: Янв. 11, 2022
Rational exploration of efficient, inexpensive, and robust electrocatalysts is critical for the efficient water splitting. Conjugated conductive metal-organic frameworks (cMOFs) with multicomponent layered double hydroxides (LDHs) to construct bifunctional heterostructure catalysts are considered as an but complicated strategy. Here, fabrication a cMOF/LDH hetero-nanotree array catalyst (CoNiRu-NT) coupled monodispersed ruthenium (Ru) sites via controllable grafted-growth strategy reported. Rich-amino hexaiminotriphenylene linkers coordinate LDH nanotrunk form cMOF nanobranches, providing numerous anchoring precisely confine stabilize RuN4 sites. Moreover, reduced Ru moieties facilitate H2 O adsorption dissociation, heterointerface between further modifies chemical electronic structures. Optimized CoNiRu-NT displays significant increase in electrochemical water-splitting properties alkaline media, affording low overpotentials 22 mV at 10 mA cm-2 255 20 hydrogen evolution reaction oxygen reaction, respectively. In actual system, drives overall splitting cell voltage 1.47 V reach . This performance comparable that pure noble-metal-based materials superior most reported MOF-based catalysts.
Язык: Английский
Процитировано
190
Nano Research, Год журнала: 2023, Номер 16(7), С. 9142 - 9157
Опубликована: Апрель 2, 2023
Язык: Английский
Процитировано
182